from django import template

register = template.Library()

def paginator(context, adjacent_pages=2):
	"""
	To be used in conjunction with the object_list generic view.

	Adds pagination context variables for use in displaying first, adjacent and
	last page links in addition to those created by the object_list generic
	view.
	"""
	page_numbers = [n for n in range(context["page"] - adjacent_pages, context["page"] + adjacent_pages + 1) if n > 0 and n <= context["pages"]]
	
	return {
		'hits': context['hits'],
		'results_per_page': context['results_per_page'],
		'page': context['page'],
		'pages': context['pages'],
		'page_numbers': page_numbers,
		'next': context['next'],
		'previous': context['previous'],
		'has_next': context['has_next'],
		'has_previous': context['has_previous'],
		'show_first': 1 not in page_numbers,
		'show_last': context['pages'] not in page_numbers,
		}

register.inclusion_tag('blog/forum/paginator.html', takes_context=True)(paginator)
